// Copyright 2014 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#ifndef UI_ANDROID_ANIMATION_UTILS_H_
#define UI_ANDROID_ANIMATION_UTILS_H_

namespace ui {

template <typename T>
T Lerp(T a, T b, T t)
{
    return a + (b - a) * t;
}

template <typename T>
T Clamp(T value, T low, T high)
{
    return value < low ? low : (value > high ? high : value);
}

template <typename T>
T Damp(T input, T factor)
{
    T result;
    if (factor == 1) {
        result = 1 - (1 - input) * (1 - input);
    } else {
        result = 1 - std::pow(1 - input, 2 * factor);
    }
    return result;
}

} // namespace ui

#endif // UI_ANDROID_ANIMATION_UTILS_H_
